Steel Web Plate Connection to AS4100

This calculator designs a web plate connection, performing the critical required checks: bolt shear, web (cleat) plate shear and bending, weld combined shear and bending, supported member (beam) shear; and punching shear of the supporting member (column). A web plate connection is typical of a beam to column flange connection that acts as a pin support for the beam.

All calculations are performed in accordance with AS4100-2020.

Design checks for a web plate connection are not explicitly stated in AS4100. The design methods presented below are based on Design Guide 3: Web side plate connections published by the Australian Steel Institute (ASI).





Results Summary

Calculation

1. Properties

1.1 Supported Member Properties

1.1.1 Beam section





Beam_section

:310 UB 40.4​







d

:304​







d1

:284​







tf

:10.2​







t_web

:6.1​







fyw

:320​







fu_web

:440​









1.1.2 Minimum design actions





phi_Vv

:320.0​







$\varphi V_{vm}=\varphi V_v=\varphi \times \{\begin{array}{l}{V}_w=0.6f_y{A}_w\\ V_b={\alpha }_v{V}_w\end{array}$



Cl 5.12.3





Vmin

:48.0 kN​







$V_{min}^{\ast }=\max (0.15\times \varphi V_{vm},40\text{kN})$



Cl 9.1.4





1.2 Supporting Member Properties

1.2.1 Column section





Column_section

:200 UC 59.5​







d_col

:210​







tf_col

:9.3​









Column grade

:350​







fu

:430​











1.4 Bolt Properties

1.4.1 Bolt size





Bolt_size

:M16​







1. 1.4.2 Number of bolt rows





np

:3​







1.4.3 Bolt category

As per Table 9.2.1, "grades" and "method of tensioning" are descriptions used to classify bolts.

Bolt grades:

1. 4.6 bolts are made from a low carbon steel. The value
   

   $f_{uf}=430MPa$
   .

1. 8.8 bolts are made from a high-strength, heat-treated, medium carbon steel. The value
   

   $f_{uf}=830MPa$
   .

Bolt tensioning specifications:

1. "S" is a snug-tightened bolt
2. "TB" is a fully tensioned bolt using the bearing types
3. "TF" is a fully tensioned bolt using the friction type

This calculator assumes the tensioning specifications is "S", as "TB" & "TF" are not recommended for cleat connections. The applications for the bolt types are provided below.



Exert from Australian Guidebook for Structural Engineers





Bolt category

:8.8/S​







fuf

:830​







1.4.4 Bolt shear capacity





Threads?

:Threaded​









phi_Vf

:59.3​







$\varphi V_f=\varphi 0.62k_r{f}_{uf}(n_n{A}_c+n_x{A}_o)$



Cl 9.2.2.1



1.4.5 Bolt spacing





Corrosive_environment

:N​









sp

:70 mm​









sp_min

:40 mm​







$s_{\text{p, min}}=2.5d_f$



Cl 9.5.1





sp_max

:298 mm​







$s_{\text{p, max}}=\{\begin{array}{ll}\min (32t_f,300\text{ mm}& \text{in non-corrosive environments}\\ \min (15t_f,200\text{ mm})& \text{in corrosive environments}\end{array}$



Cl 9.5.3





Spacing check

:sp,min ≤ sp ≤ sp,max 🟢​







1.4.6. Bolt edge distance





Bolt_edge_distance

:35 mm​









Min bolt edge

:24 mm​







$=1.5d_f$



Table 9.5.2





Max bolt edge

:112 mm​







$=\min (12t_f,150\text{ mm})$



Cl 9.5.4





Edge check

:min ≤ bolt edge ≤ max 🟢​









1.5 Weld Properties

1.5.1 Fillet weld size





tw

:6mm​







tw_min

:4 mm​







Weld thickness check

:tw ≥ tw,min 🟢​









tt

:4.242640687119271​







$t_t=\frac{t_w}{\sqrt{2}}$





1.5.2 Weld category





Weld category

:SP​









Φ,w

:0.8​







${\varphi }_w=\{\begin{array}{ll}0.6& \text{for GP}\\ 0.8& \text{for SP}\end{array}$



Table 3.4



1.5.3 Weld electrode type





Electrode_type

:49​







fuw

:490​







1.5.4 Weld capacity





phi_vw

:997.8690896104525​







$\varphi v_w=\varphi \times 0.6\times t_t\times f_{uw}$



Cl 9.6.3.10









2. Design Actions





3. Design Checks





















Related Resources

1. Fillet Weld Group Calculator to AS 4100
2. Bolt Group Calculator to AS 4100
3. Steel Beam and Column Designer to AS4100